Line data Source code
1 : /**
2 : * Copyright Notice:
3 : * Copyright 2021-2026 DMTF. All rights reserved.
4 : * License: BSD 3-Clause License. For full text see link: https://github.com/DMTF/libspdm/blob/main/LICENSE.md
5 : **/
6 :
7 : #include "internal/libspdm_requester_lib.h"
8 :
9 : #if LIBSPDM_ENABLE_CAPABILITY_ENCAP_CAP
10 :
11 13 : void libspdm_register_get_encap_response_func(void *spdm_context,
12 : const libspdm_get_encap_response_func
13 : get_encap_response_func)
14 : {
15 : libspdm_context_t *context;
16 :
17 13 : context = spdm_context;
18 13 : context->get_encap_response_func = (void *)get_encap_response_func;
19 13 : }
20 :
21 : /**
22 : * Return the GET_ENCAP_RESPONSE function via request code.
23 : *
24 : * @param request_code The SPDM request code.
25 : *
26 : * @return GET_ENCAP_RESPONSE function according to the request code.
27 : **/
28 : static libspdm_get_encap_response_func
29 8 : libspdm_get_encap_response_func_via_request_code(uint8_t request_response_code)
30 : {
31 : typedef struct {
32 : uint8_t request_response_code;
33 : libspdm_get_encap_response_func get_encap_response_func;
34 : } libspdm_get_encap_response_struct_t;
35 :
36 : size_t index;
37 :
38 8 : const libspdm_get_encap_response_struct_t get_encap_response_struct[] = {
39 : #if LIBSPDM_ENABLE_CAPABILITY_CERT_CAP
40 : { SPDM_GET_DIGESTS, libspdm_get_encap_response_digest },
41 : { SPDM_GET_CERTIFICATE, libspdm_get_encap_response_certificate },
42 : #endif /* LIBSPDM_ENABLE_CAPABILITY_CERT_CAP */
43 :
44 : #if LIBSPDM_ENABLE_CAPABILITY_MUT_AUTH_CAP
45 : #if LIBSPDM_ENABLE_CAPABILITY_CHAL_CAP
46 : { SPDM_CHALLENGE, libspdm_get_encap_response_challenge_auth },
47 : #endif /* LIBSPDM_ENABLE_CAPABILITY_CHAL_CAP */
48 : #endif /* LIBSPDM_ENABLE_CAPABILITY_MUT_AUTH_CAP */
49 :
50 : #if ((LIBSPDM_ENABLE_CAPABILITY_KEY_EX_CAP) || (LIBSPDM_ENABLE_CAPABILITY_PSK_CAP))
51 : { SPDM_KEY_UPDATE, libspdm_get_encap_response_key_update },
52 : #endif /* ((LIBSPDM_ENABLE_CAPABILITY_KEY_EX_CAP) || (LIBSPDM_ENABLE_CAPABILITY_PSK_CAP)) */
53 :
54 : #if LIBSPDM_EVENT_RECIPIENT_SUPPORT
55 : { SPDM_SEND_EVENT, libspdm_get_encap_response_event_ack },
56 : #endif /* LIBSPDM_EVENT_RECIPIENT_SUPPORT */
57 :
58 : #if LIBSPDM_ENABLE_CAPABILITY_EVENT_CAP
59 : { SPDM_GET_SUPPORTED_EVENT_TYPES, libspdm_get_encap_supported_event_types },
60 : { SPDM_SUBSCRIBE_EVENT_TYPES, libspdm_get_encap_subscribe_event_types_ack },
61 : #endif /* LIBSPDM_ENABLE_CAPABILITY_EVENT_CAP */
62 :
63 : #if LIBSPDM_ENABLE_CAPABILITY_ENDPOINT_INFO_CAP
64 : { SPDM_GET_ENDPOINT_INFO, libspdm_get_encap_response_endpoint_info },
65 : #endif /* LIBSPDM_ENABLE_CAPABILITY_ENDPOINT_INFO_CAP */
66 : };
67 :
68 27 : for (index = 0; index < LIBSPDM_ARRAY_SIZE(get_encap_response_struct); index++) {
69 26 : if (request_response_code == get_encap_response_struct[index].request_response_code) {
70 7 : return get_encap_response_struct[index].get_encap_response_func;
71 : }
72 : }
73 1 : return NULL;
74 : }
75 :
76 : /**
77 : * This function processes encapsulated request.
78 : *
79 : * @param spdm_context A pointer to the SPDM context.
80 : * @param encap_request_size Size, in bytes, of the request data buffer.
81 : * @param encap_request A pointer to a destination buffer to store the request.
82 : * @param encap_response_size Size, in bytes, of the response data buffer.
83 : * @param encap_response A pointer to a destination buffer to store the response.
84 : **/
85 8 : static libspdm_return_t libspdm_process_encapsulated_request(libspdm_context_t *spdm_context,
86 : libspdm_session_info_t *session_info,
87 : size_t encap_request_size,
88 : void *encap_request,
89 : size_t *encap_response_size,
90 : void *encap_response)
91 : {
92 : libspdm_get_encap_response_func get_encap_response_func;
93 : spdm_message_header_t *spdm_requester;
94 :
95 8 : spdm_requester = encap_request;
96 8 : if (encap_request_size < sizeof(spdm_message_header_t)) {
97 0 : return libspdm_generate_encap_error_response(
98 : spdm_context, SPDM_ERROR_CODE_UNSUPPORTED_REQUEST,
99 0 : spdm_requester->request_response_code,
100 : encap_response_size, encap_response);
101 : }
102 :
103 8 : libspdm_reset_message_buffer_via_encap_request_code(
104 8 : spdm_context, session_info, spdm_requester->request_response_code);
105 :
106 8 : get_encap_response_func = libspdm_get_encap_response_func_via_request_code(
107 8 : spdm_requester->request_response_code);
108 8 : if (get_encap_response_func == NULL) {
109 1 : get_encap_response_func =
110 1 : (libspdm_get_encap_response_func)spdm_context->get_encap_response_func;
111 : }
112 8 : if (get_encap_response_func != NULL) {
113 7 : return get_encap_response_func(
114 : spdm_context, encap_request_size, encap_request,
115 : encap_response_size, encap_response);
116 : } else {
117 1 : return libspdm_generate_encap_error_response(
118 : spdm_context, SPDM_ERROR_CODE_UNEXPECTED_REQUEST,
119 : 0, encap_response_size, encap_response);
120 : }
121 : }
122 :
123 13 : libspdm_return_t libspdm_encapsulated_request(libspdm_context_t *spdm_context,
124 : const uint32_t *session_id,
125 : uint8_t mut_auth_requested,
126 : uint8_t *req_slot_id_param)
127 : {
128 : libspdm_return_t status;
129 : uint8_t *spdm_request;
130 : size_t spdm_request_size;
131 : spdm_get_encapsulated_request_request_t
132 : *spdm_get_encapsulated_request_request;
133 : spdm_deliver_encapsulated_response_request_t
134 : *spdm_deliver_encapsulated_response_request;
135 : uint8_t *spdm_response;
136 : size_t spdm_response_size;
137 : spdm_encapsulated_request_response_t *libspdm_encapsulated_request_response;
138 : spdm_encapsulated_response_ack_response_t
139 : *spdm_encapsulated_response_ack_response;
140 : libspdm_session_info_t *session_info;
141 : uint8_t request_id;
142 : void *encapsulated_request;
143 : size_t encapsulated_request_size;
144 : void *encapsulated_response;
145 : size_t encapsulated_response_size;
146 : size_t ack_header_size;
147 :
148 : uint8_t *message;
149 : size_t message_size;
150 : size_t transport_header_size;
151 :
152 : #if LIBSPDM_ENABLE_CAPABILITY_CERT_CAP
153 : spdm_get_digest_request_t *get_digests;
154 : #endif /* LIBSPDM_ENABLE_CAPABILITY_CERT_CAP */
155 :
156 13 : if (!libspdm_is_encap_supported(spdm_context)) {
157 0 : return LIBSPDM_STATUS_UNSUPPORTED_CAP;
158 : }
159 :
160 13 : if (session_id != NULL) {
161 0 : session_info = libspdm_get_session_info_via_session_id(spdm_context, *session_id);
162 0 : if (session_info == NULL) {
163 0 : LIBSPDM_ASSERT(false);
164 0 : return LIBSPDM_STATUS_INVALID_STATE_LOCAL;
165 : }
166 0 : LIBSPDM_ASSERT((mut_auth_requested == 0) ||
167 : (mut_auth_requested ==
168 : SPDM_KEY_EXCHANGE_RESPONSE_MUT_AUTH_REQUESTED_WITH_ENCAP_REQUEST) ||
169 : (mut_auth_requested ==
170 : SPDM_KEY_EXCHANGE_RESPONSE_MUT_AUTH_REQUESTED_WITH_GET_DIGESTS));
171 : } else {
172 13 : session_info = NULL;
173 13 : LIBSPDM_ASSERT(mut_auth_requested == 0);
174 : }
175 :
176 :
177 : /* Cache */
178 13 : libspdm_reset_message_mut_b(spdm_context);
179 13 : libspdm_reset_message_mut_c(spdm_context);
180 :
181 13 : if (session_id == NULL) {
182 13 : spdm_context->last_spdm_request_session_id_valid = false;
183 13 : spdm_context->last_spdm_request_session_id = 0;
184 : } else {
185 0 : spdm_context->last_spdm_request_session_id_valid = true;
186 0 : spdm_context->last_spdm_request_session_id = *session_id;
187 : }
188 :
189 13 : if (mut_auth_requested == SPDM_KEY_EXCHANGE_RESPONSE_MUT_AUTH_REQUESTED_WITH_GET_DIGESTS) {
190 : #if LIBSPDM_ENABLE_CAPABILITY_CERT_CAP
191 0 : get_digests = (void *)spdm_context->last_spdm_request;
192 0 : get_digests->header.spdm_version = libspdm_get_connection_version (spdm_context);
193 0 : get_digests->header.request_response_code = SPDM_GET_DIGESTS;
194 0 : get_digests->header.param1 = 0;
195 0 : get_digests->header.param2 = 0;
196 0 : spdm_context->last_spdm_request_size = sizeof(spdm_get_digest_request_t);
197 0 : encapsulated_request = (void *)spdm_context->last_spdm_request;
198 0 : encapsulated_request_size = spdm_context->last_spdm_request_size;
199 0 : request_id = 0;
200 : #else /* LIBSPDM_ENABLE_CAPABILITY_CERT_CAP */
201 : return LIBSPDM_STATUS_UNSUPPORTED_CAP;
202 : #endif /* LIBSPDM_ENABLE_CAPABILITY_CERT_CAP */
203 : } else {
204 13 : transport_header_size = spdm_context->local_context.capability.transport_header_size;
205 13 : status = libspdm_acquire_sender_buffer (spdm_context, &message_size, (void **)&message);
206 13 : if (LIBSPDM_STATUS_IS_ERROR(status)) {
207 0 : return status;
208 : }
209 13 : LIBSPDM_ASSERT (message_size >= transport_header_size +
210 : spdm_context->local_context.capability.transport_tail_size);
211 13 : spdm_request = (void *)(message + transport_header_size);
212 13 : spdm_request_size = message_size - transport_header_size -
213 13 : spdm_context->local_context.capability.transport_tail_size;
214 :
215 13 : spdm_context->crypto_request = true;
216 13 : spdm_get_encapsulated_request_request = (void *)spdm_request;
217 13 : spdm_get_encapsulated_request_request->header.spdm_version =
218 13 : libspdm_get_connection_version (spdm_context);
219 : spdm_get_encapsulated_request_request->header
220 13 : .request_response_code = SPDM_GET_ENCAPSULATED_REQUEST;
221 13 : spdm_get_encapsulated_request_request->header.param1 = 0;
222 13 : spdm_get_encapsulated_request_request->header.param2 = 0;
223 13 : spdm_request_size = sizeof(spdm_get_encapsulated_request_request_t);
224 13 : libspdm_reset_message_buffer_via_request_code
225 : (spdm_context, NULL,
226 13 : spdm_get_encapsulated_request_request->header.request_response_code);
227 13 : status = libspdm_send_spdm_request(spdm_context, session_id, spdm_request_size,
228 : spdm_request);
229 13 : if (LIBSPDM_STATUS_IS_ERROR(status)) {
230 1 : libspdm_release_sender_buffer (spdm_context);
231 1 : return status;
232 : }
233 12 : libspdm_release_sender_buffer (spdm_context);
234 12 : spdm_get_encapsulated_request_request = (void *)spdm_context->last_spdm_request;
235 :
236 : /* receive */
237 :
238 12 : status = libspdm_acquire_receiver_buffer (spdm_context, &message_size, (void **)&message);
239 12 : if (LIBSPDM_STATUS_IS_ERROR(status)) {
240 0 : return status;
241 : }
242 12 : LIBSPDM_ASSERT (message_size >= transport_header_size);
243 12 : spdm_response = (void *)(message);
244 12 : spdm_response_size = message_size;
245 :
246 12 : status = libspdm_receive_spdm_response(
247 : spdm_context, session_id, &spdm_response_size,
248 : (void **)&spdm_response);
249 12 : libspdm_encapsulated_request_response = (void *)spdm_response;
250 12 : if (LIBSPDM_STATUS_IS_ERROR(status)) {
251 0 : libspdm_release_receiver_buffer (spdm_context);
252 0 : return status;
253 : }
254 12 : if (libspdm_encapsulated_request_response->header.request_response_code == SPDM_ERROR) {
255 3 : const uint8_t error_code = libspdm_encapsulated_request_response->header.param1;
256 :
257 3 : libspdm_release_receiver_buffer(spdm_context);
258 :
259 3 : if (spdm_response_size < sizeof(spdm_error_response_t)) {
260 0 : libspdm_release_receiver_buffer (spdm_context);
261 0 : return LIBSPDM_STATUS_INVALID_MSG_SIZE;
262 : }
263 :
264 3 : if (mut_auth_requested == 0) {
265 : /* Responder can send NoPendingRequests or UnexpectedRequest if it has no
266 : * encapsulated request for the Requester. */
267 3 : if ((libspdm_get_connection_version(spdm_context) >= SPDM_MESSAGE_VERSION_13) &&
268 : (error_code == SPDM_ERROR_CODE_NO_PENDING_REQUESTS)) {
269 :
270 1 : return LIBSPDM_STATUS_SUCCESS;
271 : }
272 2 : if ((libspdm_get_connection_version(spdm_context) < SPDM_MESSAGE_VERSION_13) &&
273 : (error_code == SPDM_ERROR_CODE_UNEXPECTED_REQUEST)) {
274 1 : return LIBSPDM_STATUS_SUCCESS;
275 : }
276 : }
277 1 : status = libspdm_handle_error_response_main(
278 : spdm_context, session_id,
279 : &spdm_response_size, (void **)&spdm_response,
280 : SPDM_GET_ENCAPSULATED_REQUEST, SPDM_ENCAPSULATED_REQUEST);
281 1 : return status;
282 : }
283 9 : if (libspdm_encapsulated_request_response->header.spdm_version !=
284 9 : spdm_get_encapsulated_request_request->header.spdm_version) {
285 0 : libspdm_release_receiver_buffer (spdm_context);
286 0 : return LIBSPDM_STATUS_INVALID_MSG_FIELD;
287 : }
288 :
289 9 : if (libspdm_encapsulated_request_response->header.request_response_code !=
290 : SPDM_ENCAPSULATED_REQUEST) {
291 0 : libspdm_release_receiver_buffer (spdm_context);
292 0 : return LIBSPDM_STATUS_INVALID_MSG_FIELD;
293 : }
294 9 : if (spdm_response_size <= sizeof(spdm_encapsulated_request_response_t)) {
295 1 : libspdm_release_receiver_buffer (spdm_context);
296 1 : return LIBSPDM_STATUS_INVALID_MSG_SIZE;
297 : }
298 :
299 8 : request_id = libspdm_encapsulated_request_response->header.param1;
300 :
301 8 : encapsulated_request = (void *)(libspdm_encapsulated_request_response + 1);
302 8 : encapsulated_request_size =
303 8 : spdm_response_size - sizeof(spdm_encapsulated_request_response_t);
304 :
305 8 : libspdm_copy_mem (spdm_context->last_spdm_request,
306 8 : libspdm_get_scratch_buffer_last_spdm_request_capacity(spdm_context),
307 : encapsulated_request,
308 : encapsulated_request_size);
309 8 : spdm_context->last_spdm_request_size = encapsulated_request_size;
310 8 : encapsulated_request = (void *)spdm_context->last_spdm_request;
311 :
312 8 : libspdm_release_receiver_buffer (spdm_context);
313 : }
314 :
315 : while (true) {
316 : /* Process request. */
317 8 : transport_header_size = spdm_context->local_context.capability.transport_header_size;
318 8 : status = libspdm_acquire_sender_buffer (spdm_context, &message_size, (void **)&message);
319 8 : if (LIBSPDM_STATUS_IS_ERROR(status)) {
320 0 : return status;
321 : }
322 8 : LIBSPDM_ASSERT (message_size >= transport_header_size +
323 : spdm_context->local_context.capability.transport_tail_size);
324 8 : spdm_request = (void *)(message + transport_header_size);
325 8 : spdm_request_size = message_size - transport_header_size -
326 8 : spdm_context->local_context.capability.transport_tail_size;
327 :
328 8 : spdm_context->crypto_request = true;
329 8 : spdm_deliver_encapsulated_response_request = (void *)spdm_request;
330 8 : spdm_deliver_encapsulated_response_request->header.spdm_version =
331 8 : libspdm_get_connection_version (spdm_context);
332 8 : spdm_deliver_encapsulated_response_request->header.request_response_code =
333 : SPDM_DELIVER_ENCAPSULATED_RESPONSE;
334 8 : spdm_deliver_encapsulated_response_request->header.param1 = request_id;
335 8 : spdm_deliver_encapsulated_response_request->header.param2 = 0;
336 8 : encapsulated_response = (void *)(spdm_deliver_encapsulated_response_request + 1);
337 8 : encapsulated_response_size =
338 8 : spdm_request_size - sizeof(spdm_deliver_encapsulated_response_request_t);
339 :
340 8 : status = libspdm_process_encapsulated_request(
341 : spdm_context, session_info, encapsulated_request_size,
342 : encapsulated_request, &encapsulated_response_size,
343 : encapsulated_response);
344 8 : if (LIBSPDM_STATUS_IS_ERROR(status)) {
345 0 : libspdm_release_sender_buffer (spdm_context);
346 0 : return status;
347 : }
348 :
349 8 : spdm_request_size =
350 8 : sizeof(spdm_deliver_encapsulated_response_request_t) + encapsulated_response_size;
351 8 : status = libspdm_send_spdm_request(
352 : spdm_context, session_id, spdm_request_size,
353 : spdm_request);
354 8 : if (LIBSPDM_STATUS_IS_ERROR(status)) {
355 0 : libspdm_release_sender_buffer (spdm_context);
356 0 : return status;
357 : }
358 8 : libspdm_release_sender_buffer (spdm_context);
359 8 : spdm_deliver_encapsulated_response_request = (void *)spdm_context->last_spdm_request;
360 :
361 : /* Receive. */
362 8 : status = libspdm_acquire_receiver_buffer (spdm_context, &message_size, (void **)&message);
363 8 : if (LIBSPDM_STATUS_IS_ERROR(status)) {
364 0 : return status;
365 : }
366 8 : LIBSPDM_ASSERT (message_size >= transport_header_size);
367 8 : spdm_response = (void *)(message);
368 8 : spdm_response_size = message_size;
369 :
370 8 : status = libspdm_receive_spdm_response(
371 : spdm_context, session_id, &spdm_response_size,
372 : (void **)&spdm_response);
373 8 : spdm_encapsulated_response_ack_response = (void *)spdm_response;
374 8 : if (LIBSPDM_STATUS_IS_ERROR(status)) {
375 0 : libspdm_release_receiver_buffer (spdm_context);
376 0 : return status;
377 : }
378 8 : if (spdm_encapsulated_response_ack_response->header.request_response_code == SPDM_ERROR) {
379 1 : libspdm_release_receiver_buffer(spdm_context);
380 :
381 1 : if (spdm_response_size < sizeof(spdm_error_response_t)) {
382 0 : libspdm_release_receiver_buffer (spdm_context);
383 0 : return LIBSPDM_STATUS_INVALID_MSG_SIZE;
384 : }
385 :
386 1 : status = libspdm_handle_error_response_main(
387 : spdm_context, session_id,
388 : &spdm_response_size, (void **)&spdm_response,
389 : SPDM_DELIVER_ENCAPSULATED_RESPONSE,
390 : SPDM_ENCAPSULATED_RESPONSE_ACK);
391 1 : return status;
392 7 : } else if (spdm_encapsulated_response_ack_response->header.request_response_code !=
393 : SPDM_ENCAPSULATED_RESPONSE_ACK) {
394 1 : libspdm_release_receiver_buffer (spdm_context);
395 1 : return LIBSPDM_STATUS_INVALID_MSG_FIELD;
396 : }
397 6 : if (spdm_encapsulated_response_ack_response->header.spdm_version !=
398 6 : spdm_deliver_encapsulated_response_request->header.spdm_version) {
399 0 : libspdm_release_receiver_buffer (spdm_context);
400 0 : return LIBSPDM_STATUS_INVALID_MSG_FIELD;
401 : }
402 6 : if (spdm_encapsulated_response_ack_response->header.spdm_version >=
403 : SPDM_MESSAGE_VERSION_12) {
404 1 : ack_header_size = sizeof(spdm_encapsulated_response_ack_response_t);
405 : } else {
406 5 : ack_header_size = sizeof(spdm_message_header_t);
407 : }
408 6 : if (spdm_response_size < ack_header_size) {
409 0 : libspdm_release_receiver_buffer (spdm_context);
410 0 : return LIBSPDM_STATUS_INVALID_MSG_SIZE;
411 : }
412 :
413 6 : if (spdm_encapsulated_response_ack_response->header.spdm_version >=
414 : SPDM_MESSAGE_VERSION_12) {
415 1 : if (spdm_encapsulated_response_ack_response->ack_request_id !=
416 1 : spdm_deliver_encapsulated_response_request->header.param1) {
417 0 : libspdm_release_receiver_buffer (spdm_context);
418 0 : return LIBSPDM_STATUS_INVALID_MSG_FIELD;
419 : }
420 : }
421 :
422 6 : switch (spdm_encapsulated_response_ack_response->header.param2) {
423 5 : case SPDM_ENCAPSULATED_RESPONSE_ACK_RESPONSE_PAYLOAD_TYPE_ABSENT:
424 5 : libspdm_release_receiver_buffer (spdm_context);
425 5 : return LIBSPDM_STATUS_SUCCESS;
426 0 : case SPDM_ENCAPSULATED_RESPONSE_ACK_RESPONSE_PAYLOAD_TYPE_PRESENT:
427 0 : break;
428 1 : case SPDM_ENCAPSULATED_RESPONSE_ACK_RESPONSE_PAYLOAD_TYPE_REQ_SLOT_NUMBER:
429 1 : if (spdm_response_size >= ack_header_size + sizeof(uint8_t)) {
430 1 : if ((req_slot_id_param != NULL) && (*req_slot_id_param == 0)) {
431 0 : *req_slot_id_param =
432 0 : *((uint8_t *)spdm_encapsulated_response_ack_response + ack_header_size);
433 : /* 0xFF or 0xF slot is not allowed. */
434 0 : if (*req_slot_id_param >= SPDM_MAX_SLOT_COUNT) {
435 0 : libspdm_release_receiver_buffer (spdm_context);
436 0 : return LIBSPDM_STATUS_INVALID_MSG_FIELD;
437 : }
438 :
439 0 : if ((spdm_encapsulated_response_ack_response->header.spdm_version >=
440 0 : SPDM_MESSAGE_VERSION_13) &&
441 0 : spdm_context->connection_info.multi_key_conn_req) {
442 0 : if ((spdm_context->local_context.local_key_usage_bit_mask[*req_slot_id_param
443 0 : ] & SPDM_KEY_USAGE_BIT_MASK_KEY_EX_USE) == 0) {
444 0 : libspdm_release_receiver_buffer (spdm_context);
445 0 : return LIBSPDM_STATUS_INVALID_MSG_FIELD;
446 : }
447 : }
448 : }
449 1 : libspdm_release_receiver_buffer (spdm_context);
450 1 : return LIBSPDM_STATUS_SUCCESS;
451 : } else {
452 0 : libspdm_release_receiver_buffer (spdm_context);
453 0 : return LIBSPDM_STATUS_INVALID_MSG_SIZE;
454 : }
455 : break;
456 0 : default:
457 0 : libspdm_release_receiver_buffer (spdm_context);
458 0 : return LIBSPDM_STATUS_INVALID_MSG_FIELD;
459 : }
460 0 : request_id = spdm_encapsulated_response_ack_response->header.param1;
461 :
462 0 : encapsulated_request =
463 : ((uint8_t *)spdm_encapsulated_response_ack_response + ack_header_size);
464 0 : encapsulated_request_size = spdm_response_size - ack_header_size;
465 :
466 0 : libspdm_copy_mem (spdm_context->last_spdm_request,
467 0 : libspdm_get_scratch_buffer_last_spdm_request_capacity(spdm_context),
468 : encapsulated_request,
469 : encapsulated_request_size);
470 0 : spdm_context->last_spdm_request_size = encapsulated_request_size;
471 0 : encapsulated_request = (void *)spdm_context->last_spdm_request;
472 :
473 0 : libspdm_release_receiver_buffer (spdm_context);
474 : }
475 :
476 : return LIBSPDM_STATUS_SUCCESS;
477 : }
478 :
479 0 : libspdm_return_t libspdm_send_receive_encap_request(void *spdm_context, const uint32_t *session_id)
480 : {
481 0 : return libspdm_encapsulated_request(spdm_context, session_id, 0, NULL);
482 : }
483 :
484 : #endif /* LIBSPDM_ENABLE_CAPABILITY_ENCAP_CAP */
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